These heavyweight neodymium magnet blocks are extremely powerful and must be handled with caution. They can pinch very hard if you get between two of them or one and a piece of metal. They are heavy, sturdy, and unbelievably powerful.

These heavyweight neodymium magnet blocks are extremely powerful and must be handled with caution. They can pinch very hard if you get between two of them or one and a piece of metal. They are heavy, sturdy, and unbelievably powerful.